[PATCH v2 04/10] coresight: trbe: Ensure the format flag is set on truncation

Suzuki K Poulose suzuki.poulose at arm.com
Fri Jul 23 05:46:05 PDT 2021


When the TRBE is stopped on truncating an event, we may not
set the FORMAT flag, even though the size of the record is 0.
Let us be consistent and not confuse the user. Always set the
format flag for TRBE generated records.

Cc: Anshuman Khandual <anshuman.khandual at arm.com>
Cc: Leo Yan <leo.yan at linaro.org>
Cc: Mike Leach <mike.leach at linaro.org>
Cc: Mathieu Poirier <mathieu.poirier at linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose at arm.com>
---
 drivers/hwtracing/coresight/coresight-trbe.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/hwtracing/coresight/coresight-trbe.c b/drivers/hwtracing/coresight/coresight-trbe.c
index 176868496879..446f080f8320 100644
--- a/drivers/hwtracing/coresight/coresight-trbe.c
+++ b/drivers/hwtracing/coresight/coresight-trbe.c
@@ -132,7 +132,8 @@ static void trbe_stop_and_truncate_event(struct perf_output_handle *handle)
 	 * the update_buffer() to return a 0 size.
 	 */
 	trbe_drain_and_disable_local();
-	perf_aux_output_flag(handle, PERF_AUX_FLAG_TRUNCATED);
+	perf_aux_output_flag(handle, PERF_AUX_FLAG_TRUNCATED |
+				     PERF_AUX_FLAG_CORESIGHT_FORMAT_RAW);
 	*this_cpu_ptr(buf->cpudata->drvdata->handle) = NULL;
 }
 
-- 
2.24.1




More information about the linux-arm-kernel mailing list